- published: 21 Jan 2015
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In the physical sciences, a particle is a small localized object to which can be ascribed several physical properties such as volume or mass. The word is rather general in meaning, and is refined as needed by various scientific fields.
Whether objects can be considered particles depends on the scale of the context; if an object's own size is small or negligible, or if geometrical properties and structure are irrelevant, then it can be considered a particle. For example, grains of sand on a beach can be considered particles because the size of one grain of sand (~1 mm) is negligible compared to the beach, and the features of individual grains of sand are usually irrelevant to the problem at hand. However, grains of sand would not be considered particles if compared to buckyballs (~1 nm).
The concept of particles is particularly useful when modelling nature, as the full treatment of many phenomena is complex. It can be used to make simplifying assumptions concerning the processes involved. Francis Sears and Mark Zemansky, in University Physics, give the example of calculating the landing location and velocity of a baseball thrown in the air. They gradually strip the baseball of most of its properties, by first idealizing it as a rigid smooth sphere, then by neglecting rotation, buoyancy and friction, ultimately reducing the problem to the ballistics of a classical point particle.
DJ Logic (born Jason Kibler) is an American turntablist active primarily in jazz and with jam bands.
Kibler was born and raised in The Bronx. An early interest in hip hop led to his using the turntables, practicing often. Kibler was also interested in funk and jazz music, and began collaborating with various musicians. His own recordings are perhaps best described as contemporary soul jazz with a strong hip hop feel.
Kibler tours often with his own group, Project Logic, and has recorded or performed with Vernon Reid, moe., John Mayer, Medeski Martin & Wood, Bob Belden, Jack Johnson, Chris Whitley, Uri Caine, Christian McBride and others. On April 6, 2006, Kibler sat in with Bob Weir's Ratdog, adding his style to the famous Grateful Dead song combo "China Cat Sunflower/I Know You Rider". He is a founding member of The John Popper Project. On August 15, 2009, Kibler sat in with O.A.R. at Madison Square Garden, adding his style to their latest single "This Town".
His mentor was Vernon Reid, and the twosome recorded and toured occasionally as the Yohimbe Brothers with various guests. Kibler has appeared on studio and live performances with Reid's solo projects, and Reid also did a guest solo on one track from Kibler's original band, Eye and I, which also featured D.K. Dyson and Melvin Gibbs, the latter of which has played on all of the DJ Logic solo releases as well.
Richard Phillips Feynman ( /ˈfaɪnmən/; May 11, 1918 – February 15, 1988) was an American physicist known for his work in the path integral formulation of quantum mechanics, the theory of quantum electrodynamics, and the physics of the superfluidity of supercooled liquid helium, as well as in particle physics (he proposed the parton model). For his contributions to the development of quantum electrodynamics, Feynman, jointly with Julian Schwinger and Sin-Itiro Tomonaga, received the Nobel Prize in Physics in 1965. He developed a widely used pictorial representation scheme for the mathematical expressions governing the behavior of subatomic particles, which later became known as Feynman diagrams. During his lifetime, Feynman became one of the best-known scientists in the world. In a 1999 poll of 130 leading physicists worldwide by the British journal Physics World he was ranked as one of the ten greatest physicists of all time.
He assisted in the development of the atomic bomb and was a member of the panel that investigated the Space Shuttle Challenger disaster. In addition to his work in theoretical physics, Feynman has been credited with pioneering the field of quantum computing, and introducing the concept of nanotechnology. He held the Richard Chace Tolman professorship in theoretical physics at the California Institute of Technology.
Actors: Stephen Hawking (actor), Larry Bain (producer), Richard Hanet (miscellaneous crew), William Ng (costume designer), Aris Athanasopoulos (actor), Aris Athanasopoulos (actor), Peter Conrad (director), Peter Conrad (producer), Peter Conrad (writer), Ken Vandevrie (composer), Steve Kelly (editor), Raymond Laflamme (actor), Anton Zeilinger (actor), Rocky Kolb (actor), John Matlock (producer),
Plot: The Challenge of Quantum Reality explores the fantastical subatomic world. From the shocking claims of theories first broached a century ago to the amazing technological innovations that have grown out of our understanding of quantum physics.
Keywords: education, experiment, high-school, interview, physicist, physics, quantum-physics, science